The Bad Wrap Templates are Photoshop based. I find they are awesome to use. Why not import your AI vectors as smart objects, keeping them vector, you could scale them half size - double the document raster effects ( drop shadow ) in Illustrator first, or do it later in Photoshop at whatever resolution you need. I admit I don't use Onyx and assume you are using Illustrator to create a spot colour / contour cut-line. I don't agree with not mixing the two, vector and raster, I do it all the time and find Photoshop with Vector smart object layers works best for me. I do use Bad Wrap templates and agree with the some others the final design should be full size, at the desired print resolution. Also, you can use vector tools in Photoshop and export those paths to Illustrator or Flexi as well. You could also import a flattened Photoshop ( .PSD) with transparent background into Flexi apply a contour cut and export it out as an .EPS. Does Onyx cut .EPS files?